What is the national emission standard for a 2004 vehicle?

[CooperDella]

Vehicles from 2004 comply with the China II emission standard. Here are several ways to check your vehicle's emission standard: 1. Refer to the environmental protection label issued during vehicle inspection. 2. Inquire at the vehicle management office. 3. Check the vehicle model directory on the Motor Vehicle Environmental Protection Website. Below are the implementation timelines for emission standards: 1. China I standard, implemented nationwide on July 1, 2001, mainly imposing restrictions on carbon monoxide, hydrocarbons, and particulate emissions. 2. China II standard, implemented nationwide on July 1, 2004, requiring a 30% reduction in carbon monoxide and a 55% reduction in hydrocarbons and carbon oxides. 3. China III standard, implemented nationwide on July 1, 2007, requiring a 40% reduction in total pollutant emissions compared to China II. 4. China IV standard, implemented nationwide on July 1, 2010, requiring a 50% to 60% reduction compared to China III. 5. China V standard, implemented nationwide on January 1, 2018, requiring a 25% reduction in nitrogen oxide emissions compared to China IV. 6. China VI standard, with China VIa implemented nationwide on July 1, 2020, and China VIb on July 1, 2023.